Machine for cutting slab packing



W. J. KENT.

MACHINE FOR CUTTING SLAB PACKING. APPLICATION FILDVJAN. 20. 1920.

1419,144, Immune 13,1922..

WLLIAN J. KENT, 0F BROOKLYN, NEW 'YC-RK, JSSGNR THE 'MECHANICAL COMPANY, A. CORPORTION Oft NEW' J WAGHEN FOR CUTTBNG SLAB EACKHIG:

Lliefddel.,

To all fio/1,0m t may cmiccra:

Be it known that I, VILLIAM J. KENT, a citizen of the United States, residing at Brooklyn, county of Kings, and State of ll ew York, have invented new and useful -improvements in Machines for Cutting Slab hacking, of which the following is av full, clear, and exact description.

rlhis invention relates to a machine for cutting slab pac-king and similar material.

reviously toy my invention it has been customary to cut slab packing one piece at a time with a single knife, as owing to the thickness and rigidity of the slab it was impossible to force a plurality of knives in transverse alignment 'through the slab with out causing buckling and inaccurate cutting.

rlheobject of my invention is to provide a machine having means so arranged that ra number of pieces may be accurately cut from a slab of packing or similar material in a single operation, thereby increasing production, conserving labor and reducing the cost of the material to the public.

For a full disclosure of the invention, reference is made to the accompanying drawings and specification.

In the drawings: f

Figure l is a top plan view of the machine, partly broken away and partly in section.

Fig. 2 is a side elevation of the machine partly broken away.

Fig. 3 is a plan view showing the operation of the cutters on a slab of packing.

Referring to the drawings, the numeral lrepresents the reciprocable bed of an ordinary type of planer, the details of which form no part of my invention and have not been illustrated. On each side of the bed, uprights 2 are disposed, between which eX- tends the cross rail 3 upon which the cutting mechanism is mounted to slide. This cutting mechanism comprises a saddle lslid able on the cross rail 9, which saddle has a block 5 extending into a transverse recess 6 in the cross rail. versely by means of a feed rod 7 vmounted in the cross rail and having a screw thread connection `with the block 5 of the saddle.y At the outer end of the yfeed rod 7 a handle 8 is provided for actuating the same. To the front face of the saddle 4- an ordinary form of swivel 9 is adjustably secured by bolts 9, and a cutter carryincd frame l0 is pivotally mounted on the swivel 9 at ll.

The. saddle is moved trans-r Sfpcceation of Letters Patent. Pgm-gd Jun@ 13, 1922 apmieaun sied Januar-J se, i920.

Serial No. 352,892.

This frame is 'formed in sections connected by the bolt l0 and screws l0". Adjustably mounted in the frame 10 is a series of knives or cutters l2, which are secured in adjusted position by means of screws i3, the' knives being parallel to each other but arranged in stepped relation, as shown in Fig'. l. Also disposed on each side of the bed in advance of the cutter mechanismy are uprights 14Cy having vertical slots i5 therein, in which the bearing blocks 16 of a roll i7 may slide. Vertical slots i7 are lprovidcdin the bearing blocks 16, in which slots the axle 17 of" the roll 17 is freely movable. Each upright ifi has near its upper portion a horizontal shelf or extension 18 in which a bevel gear 19 is mountedA on a vertical axis, the lower vertical portion of the shaft of the gear k19 being screw threaded at 2O and enga-ging a screw threaded lug 2Q in the bearing i6. A horizontal shaft 2l is mounted in the upper ends of the uprights land' carries bevel gears 22, each meshing with a respective bevel gear i2.' Thelshaft 2lk is actuatedv by means of a handle 23 at one end.

ln operation a slab ofpacking 2e is dis# posedl on the reciprocable bed 1, and theroll i7 adjusted downwardly by ymean's'of the handle 23 to bear against the upper sideA of the sla-band retain itin `position upon the bed. ment of the bed l carries the slab 24 intor engagement with the stepped series of knives l2, which'results in the simultaneous cutting of ksuccessive strips of packing'25 from the edge of the slab as shown in Fig. 3. Slide movement of the slab during the cutting operation is prevented by the guide 26V. Upon the completion of the cutting of one such series of strips, the cutting mechanism lGO Upon starting the machine the move- K is elevated o'nits pivot `11,-the bed is drawnl ack and the cutting mechanisnipositioned for a new series ofcuts by operation ofthe handle 8. it will be noted in Fig; i3 that by the stepped arrangement of the knivesl2 each cut strip is free to move outwardly to allow room for the cutter`- as it advances through the packing, thereby "reducing fric? tion and preventingany buckling of the slab. The roll l?, which is a heavy oneyfis adjusted until it rests* by its own weight on the slab to retainit in position on the yloedil as the lattermoves forwardly. By loosening Vthebolts 9, the swivel 9 maybe adjusted to vary the cutting angle of the knives 12.

It is evident that the number of knives and their spacing may be varied according to circumstances, but it is essential that they be arranged in stepped relation in order that the cut strips may be :tree to move outwardly as they are severed from the edge of the slab by their respective knives.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

l. In a machine for cutting slab packing, a cutting bed adapted to receive a slab of packing, means coacting with one edge of the slab for preventing transverse movement thereof, and a series of angularly aligned simultaneously operating rigid knives for cutting strips in succession from the free edge of the slab, whereby the cut strips may spread laterally to relieve the knives from binding.

2. In a machine for cutting slab packing, a plurality of cutting elements in stepped arrangement and adapted to engage the material adjacent one edge of a slab, means for causing alternate longitudinal cutting and transverse shifting relative movements of said cutting elements as a unit and a slab of packing, and means coactingwith the other edge or" the slab to prevent transverse movement thereof during a cutting move ment. y y i 3. In a machine for cutting slab packing, a cutting bed Jfor a slab, an abutment for one edge of the slab, a plurality of laterally spaced rigidly connected edged-cutting elements each arranged to engage the opposite free edge portion of the slab at a point out of transverse alignment with the others,`

means for retaining the bed y and slab in contact, and means for causing a relative movement of said cutting elements and the slab.

4. In a machine for cutting slab packing, a single line of parallel cutting elements in stepped arrangement, means for simultaneously varying the cutting angle of said elements, and means for moving the slab into Contact with the cutting elements.

5. In a machine for cutting slab packing, an abutment for one edge ot the slab, simultaneously 4operating means for cutting strips in succession` from the opposite free edge of the slab, and means for simultaneously moving said first means transversely of the slab.

6. In a machine for cutting slab packing, an abutment for one edge of the slab simuL taneously operating rigidly connected edgedcutting `means for cutting strips in succession from the free edge of the slab, and means for causing a relative movement of said iirst means and the slab longitudinally and transversely of the slab.

7. In a machine for cutting slab packing,

' a frame, a plurality of parallel knives disposed in said frame in stepped arrangement, a support, a pivotalconnection between said frame and support, means for transversely moving said support and the parts carried thereby, and means for moving the slab into engagement with the knives.

8. In a machine for cutting slabpacking, a pivotally mounted carrier, a plurality of parallel knives disposed in stepped arrangement in said carrier, a traveling bed for the slab, and means for retaining the slab in contact therewith.

9. In a machine for cutting slab packing, a cutting bed for the slab, a plurality of knives in stepped arrangement, `means whereby the cutting angle of the knives may be varied, means whereby the knives may be adjusted toward or 'from the bed, means whereby the knives may be` moved to inoperative position, means for causing a cut ting engagement of the knives and slab, and means for varying the points of cutting engagement transversely of the slab.

l0. In a machine for cutting slab packing, a reciprocable cutting bed for the slab, `adjustable means for retaining the slab in con.- tact with the bed, a series of knives disposed in stepped arrangement in the path of the slab, and means whereby` the knives may be moved to inoperative position.

1l. In a machine for cutting slab packing, a reciprocable cutting bed for the slab, means for` retaining the slab in contact with the bed, a series of knives disposed in stepped arrangement in the path of the slab, and means for simultaneously moving the knives transversely with respect to the slab.

12. In a machine for cutting slab packing, a reciprocable cutting bed for the slab, an abutment 'for one edge of the slab,super posed rotary aneans for retaining a slab on la. In a machine for cutting slab packing,`

a frame, a reciprocable cutting bed for a slab carried thereby, slotted uprights carried by the frame at thesides of the bed, a roller journaled in said slots, means for raising or lowering the roller, and a series of stepped vcutters disposed in the path ot' a slab carried by the bed.

Signed at New York, in the county of New York and State of New 13 day of January, 1920. y

f WILLIAM J; KENT.

. York, this lll) 

